IA88C00
Data Sheet
Microcontroller
As of Production Version -01
AC Electrical Characteristics
Figure 64. External I/O or Memory Read and Write Timing
Number
Symbol
TdA(AS)
ThAS(A)
Parameter
Address valid to /AS Rise Delay
/AS Rise to Address Valid
1
2
3
4
TdAS(DI)
TwAS
/AS Rise to Data in Required Valid Delay
/AS Low Width
5
6
TdAZ (DSR)
TwDSR
Address Float to /DS (Read)
/DS (Read) Low Width
7
TwDSW
/DS (Write) Low Width
8
9
TdDSR (DI)
ThDSR (DI)
TdDS (A)
TdDA (AS)
TdR/W (AS)
TdDS (R/W)
TdDO (DSW)
ThDSW (DO)
TdA (DI)
TdAS (DSR)
TsDI (DSR)
TdDM (AS)
TdDS (DM)
ThDS (A)
TwW
/DS (Read) to Data
/DS Rise (Read) to Data in Hold Time
/DS Rise to Address Active Delay
/DS Rise to /AS Delay
10
11
12
13
14
15
16
17
18
19
20
21
22
23
R/W to AS Rise Delay
DS Rise to R/W Valid Delay
Data Out to /DS (Write) Delay
/DS Rise (Write) to Data Out Hold Time
Address to Data In Required Valid Delay
/AS Rise to D/S (Read) Delay
Data in Setup Time to DS Rise (Read)
/DM to /AS Rise Delay
/DS Rise to /DM Valid Delay
/DS Rise to Address Valid Hold Time
Wait Width (One Wait) Window
/AS Rise to Wait Delay
TdAS (W)
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